Composition for sound-records and other objects.



L. AL JLALi.

haw .ll. Ami. JUJJL'W GI ill-Si JERSEY.

DISUN. C5 IJLEWELL' I; PARK, WEST ORANGE NEXU JERSEY,

ll. EDISON, INCQRJPQEATED, GF 'WES'I ORANGE, KEV] JERSEY, A C051ASSIGNOR OBJECTS.

application filed January certain iiivente .,n'iposit1on for Sound thetolnon composition .pted for use as a w i objects in which similarcharacteristics are required.

" e ohjcct oi? my inv-zntion is to profuee 'on. composed of theingredients ing the charactc stics which will be 1*i at. forth in thefollowing: specithe nxiportiou of one-fourth of the c by Weight,altlmugh a. less proportcti'a-chloronaphthalenc may he 1o auhstancccools and solidiforming asound rcc composition should bc con- 0d toprevent. the segregation Q 01" the tetra-chioifonaphthalonc, and may bcflowed or otherwise located upon (lGSHGfl surface 01 in the desiredshape and there allowed to harden. A composition such as de- QCIilJSflretains all the hat .ness oi. shellac.

fiscoificsxtian of L tters Patent.

but has a greater toughness and elasticity than shellac and otherqualities desirable in a composition for the formation oi sound rocoros.The toughness is largely due to the felted. struotui'e of crystals ortetra chloronaphthaleno in the shellac. it may he remarked thattetra-ehlo1'onaphlhalene has perhaps the most pou'r-i'i'ul tiudem' v to"'allize of any organic sulistam-u.

The term tetra-chloroiiaphthaleuv" is a trade designation for aproduct-'l'ormeil by the chlorination of naphthaleiu which (i-vs"-tallizcs as a felt of flexible. iibi'ous cuts-nil it apparently is amixture of various (lllfii'lll sliihstitution products of naphthalene.probably the 'ti'i-. tetra-. and penta-i-hloi-onaphthalenes having;sulxstantiall the same a verage, composition as tctra-chlorouaphthalene.if have alsoctound that (li-nilib-benzene and di-nitit-o-toluenc may beused as substitutes 2. As a. new composition of matter. shellac and afclted mass oi fibrous crystals of a halogenizcd naphthalene distributedthrough the shellac. substantially as described.

3. As a new composition of matter. shellac and crystallizedtetrawhloro-naphthalcno distributed through the same. substantially asdescribed.

4. As a new composition of matter. shellac and a higher chlorinsubstitution product o naphthalene in crystalline form distributedthrough the same. substantiall as described.

' 5. ills a new composition of matter. shellac and a higher chlorinsubstitution product of naphtl'lalenc distributed through the same, andin the proportion ot not more than onciouifth the shellac. byu' 'eig'ht.substantially as described.

6. As anew composition of matter, shellac and a felted mass of crystalsof a substitution product of an aromatic hydrocarbon distributed throughthe same,.substantially 5 as described.

7 As a new composition of matter, a hard resin and a felted mass ofcrystals of a substitution product of an aromatic hydrocarbondistributed through the same. subsumtially as described.

This specification signed and witnessed this 25thday of January 19H.

THOMAS A. 11111)]SOX. Witnesses:

DYER SMITH, ANNA R. KLEHM.

Copies of this patent may be obtained for five cents eaeligby addressingthe Commissioner of Patents, Washington, D. C.

